Fixed issue: NETTY-29 (ChannelBufferInputStream.readFully(byte[], int, int) should throw IndexOutOfBoundsException.)

* ChannelBufferInputstream.checkAvailable() throws IndexOutOfBoundsException instead of IllegalArgumentException now.

src/main/java/org/jboss/netty/buffer/ChannelBufferInputStream.java

@@ -232,7 +232,7 @@ public class ChannelBufferInputStream extends InputStream implements DataInput {
 
     private void checkAvailable(int fieldSize) throws IOException {
         if (fieldSize < 0) {
-            throw new IllegalArgumentException();
+            throw new IndexOutOfBoundsException();
         }
         if (fieldSize > available()) {
             throw new EOFException();